メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.409679822798 43.1225982522588, 141.408968472468 43.1233124568417, 141.408922284872 43.123277935102, 141.408575868778 43.1230190912708, 141.407626953251 43.122377479034, 141.40703135515 43.1219889956576, 141.407010231259 43.1219751953999, 141.406448119109 43.1215956814274, 141.406192090995 43.1214259764396, 141.407247682532 43.1204509018169, 141.407881116247 43.1198590694225, 141.408167273193 43.1196383159893, 141.409655304688 43.1204148517328, 141.411081174393 43.1211546889859, 141.410496365394 43.1217731366769, 141.409679822798 43.1225982522588)) ^^http://www.opengis.net/ont/geosparql#wktLiteral